Improvement in grain thrashers and separators



r n. LIP FY. Grain-Thrasher and Separator.

N0. 160.689 A I PatefltedMarch'9,187-5v Wi'Znessea:

X/Q l THE GRAPHIC C0.PHDTO.-LITH.39&41 PARK PLAOLILY.

UNITED STATES PATENT OFFICE.

DAVID LIPPY, OF MANsFIELD, OHIO, ASSIGNOR TO JOHN s. BLYMYER, OF sAMEPLACE.

IMPROVEMENT IN GRAIN THRASHERS AND SEPARATORS.

Specification forming part of Letters Patent No. 160,689, dated March 9,1875; application filrd July 30, 1874. i

To all whom it may concern:

Be it known that I, DAVID LIPPY, of Mansfield, in the county of Richlandand State of Ohio, have invented certain Improvements in Grain Thrashersand Separators, of which the following is a specification:

My invention consists in certain improvements in the construction ofmachines for thrashing and separating grain, whereby they are renderedmore perfect in their operation, all as hereinafter more fullydescribed.

Figure 1 is a longitudinal vertical section, and Fig. 2 is a transversevertical section on the line so a: of Fig. 1. Figs. 3 and 4 are views ofportions shown more in detail.

In constructing my improved machine I make the frame or body in theusual manner, the improvements having special reference to the devicesfor separating and cleaning the grain.

To separate the grain from the straw, I first provide a series of fixedbars, a, arranged lengthwise of the frame, and between them mountalternately a corresponding series of rake-bars, 0, their front endsbeing connected to a double crank-shaft, h, in such a manner that as onebar falls the next one will rise, and their rear ends having cross-heads0r grooved slides t attached and arranged to slide on the edges ofinclined plates u, these latter devices being shown more clearly in Fig.4, and their relation to the bars being shown in Fig. 1. It will beobserved that the rake-bars c are so arranged in relation to thestationary bars a as to rise considerably above the latter when inmotion, and so that their teeth e will always be higher than thestationary bars 0, the object of which is to cause the rake bars to morethoroughly toss and shake up the straw, and thereby more efiectuallyclear it of the shelled grain, the rake-bars with their teeth 0 thusserving as beaters.

In constructing the teeth 0 for the rakebars, I take a thin bar or stripof metal, I, as shown in Fig. 3, and double or bend it up in such amanner as to form the vertical projections or teeth 6, as shown. The barI, when thus provided with the teeth 0, is secured upon the upper edgeof the rake-bar 0, thus not only providing the bar with the teeth, butalso covering its upper edge, and thus protecting it from wear. This isavery simple, cheap, and efficient method of constructing the teeth, andaffords also a simple and efficient means of attaching them to therake-bars.

Underneath the separating devices, I arrange an inclined bottom, B, therear end of which is supported on a rock-shaft while its front end isconnected by arod or pitman, d, to a shaft, g, on which there is aneccentric or crank by which motion is imparted to the bottom B, by whichmeans this bottom board B is made to deliver its contents freely andregularly to the fan-shoe O for the action of the blast. As shown inFig. 1, this shaft 9 is located about midway between the lower ends ofthe two inclines or delivery-boards Z and B and to prevent the cloggingof the grain, chafl', straw, 8170., at this point, I attach to the shaft9 a fiat projecting strip or wing, f, which extends across from side toside, and which, being carried around with the shaft, operateseffectually to keep the space clear and prevent the clogging of thematerial, thus insuring its more even and regular delivery to the shoe0, where it is operated upon by the sieves and the fan-blast. By thesetwo means, I cause the grain, both at front and rear, to be delivered ina steady and continuous flow to the fanshoe, whereby the blast isenabled to operate upon' it more effectually and evenly, and 0011-sequently to clean it more thoroughly.

In the trough i at the rear end of the shoe 0, which receives thetailings or unthrashed heads, &c., in the usual manner from the screens,(not shown,) I place a board, 7", which has a series of transversenotches or shoulders on its upper face, as shown in Fig. 2. This boardis pivoted at its upper end as indicated at 1), Fig. 2, while at itsopposite end there is a pin, n, protruding from one of its edges, andengaging in an inclined groovein a bar, m, so that as the shoe 0receives a lateral motion, this incline will impart to the lower end ofthe board 1 an up-and-down motion, by which, in connection with theshoulders on its face, the material falling thereon is moved along anddelivered into the hopper H at the side of the machine, from whence itis carried up by the conveyer D and delivered to the cylinder to berct-hrashed, as is usual in these machines.

In order to prevent this material as it is delivered from the spout ifrom tailing down at the end of the conveyer-belt and becoming cloggedbehind the roller J, I place within the hopper H, as shown in Fig. 1, anelastic valve,

0, which may consist of a strip of leather or rubber, it being made fastat its upper end, with its lower end resting loosely on theconveyor-belt k, as represented. It is obvious that this valve or apron0 may be made of rigid material, such as wood or sheet metal, its upperend being hinged or pivoted so as to permit its lower end to hang looseand rise to let the buckets or cleats on the belt kpass freely under it,it being more or less inclined, so its free end will rest lightly on thebelt 70, and thus prevent the material from dropping down behind thepulley, where it is apt to become clogged and prevent the belt fromoperating as it should.

By these several improvements, I am enabled to make a machine that willoperate effectually and economically.

Having thus described my invention, what I claim is- 1. The bars 0,having secured to their upper edges the metal strips I, bent atintervals to form the teeth 6, substantially as described.

2. The wing f, arranged to rotate in the space between the ends of thedelivery-boards B and l, for the purpose of preventing the material frombecoming clogged, substantially as described.

3. The notched board 0", pivoted at its rear end in the spout 2',attached to the shoe 0, with its opposite end connected to and operatedby the incline m, substantially as shown and described.

DAVID LIPPY.

Witnesses:

STEPHEN PRIEST, L. B. MATRON.

